Bambion, The Living Forest

Immovable Object. Bambion, The Living Forest can't move. 

Forest Sense. Bambion, The Living Forest can instantly know the location of anything that comes in contact with the plant life around it. This does not include grass.

Multiattack. Bambion, The Living Forest makes two Root Skewer attacks.

Root Skewer. Melee Weapon Attack: +10 to hit, reach 15 ft., one target. Hit: 16 (3d6 + 6) Piercing damage.

Rock. Ranged Weapon Attack: +10 to hit, range 60/180 ft., one target. Hit: 28 (4d10 + 6) bludgeoning damage.

Animate Trees (1/Day). Bambion, The Living Forest magically animates one or two trees it can see within 60 feet of it. These trees have the same statistics as a treant, except they have Intelligence and Charisma scores of 1, they can't speak, and they have only the Slam action option. An animated tree acts as an ally of Bambion, The Living Forest. The tree remains animate for 1 day or until it dies; until the Bambion, The Living Forest dies or is more than 120 feet from the tree; or until the treant takes a bonus action to turn it back into an inanimate tree. The tree then takes root if possible.